Data Prepper 1.4.0 - Support for OpenSearch 2.0

The recently released Data Prepper 1.4.0 introduces support for writing documents to OpenSearch 2.0 clusters. It continues to support OpenSearch 1.x versions and the same OpenDistro versions as before.

I encourage all Data Prepper users to update to 1.4.0. If you plan on upgrading your OpenSearch clusters to 2.0.0, which should release this month, you will need it.